I bought a 2001 Passat and the factory wiring was cut. I am having a hard time with the coloring diagram because there is multiple brown wires and one thick one I learned the thick one is the ground, i see the browns also twist with a color. Figuring out which one goes to what is what I’m having a hard time with. I’ve got brown and green, brown and red, brown and yellow, brown and blue. There is two thick red and blue striped wires. So confused.